i love this. so interesting especially if you're raising kids. 0 how learning a second language can produce a more nimbler brain. it makes scene. >> i was looking at it this morning. it's depressing for us who are mono-lingual. our science writer talks it's not that people who are bilingual. >> my niece speaks swedish, english and polish. >> how old is she? >> 4. >> yeah. >> she jumps in and out of the languages seamlessly. she's surrounded by the languages. literally it just happens when children are -- you don't have to send it home to class they